Prefixes and suffixes

The designations of most SKF rolling bearings follow a system that may consist of a basic designation with or without one or more prefixes and/or suffixes, as shown in the table and the examples below.

Prefixes and suffixes provide additional information about the bearing.

Prefixes are mainly used to identify components of a bearing. They can also identify bearing variants.

Suffixes identify designs or variants, which differ in some way from the original design or from the current basic design. The suffixes are divided into groups. When more than one special feature is to be identified, suffixes are provided in the order shown in the table below.

Descriptions of commonly used prefixes and suffixes are given in the following sub-sections.

Details of the significance of specific prefixes and suffixes are given in the relevant product sections.

Designation system

Prefixes

Basic Designation

Suffix - Internal design

Suffix - External design (seals, snap ring groove etc.)

Suffix - Cage design

Suffix - Materials, heat treatment

Suffix - Accuracy, clearance, preload, quiet running

Suffix - Bearing sets, matched bearings

Suffix - Stabilization

Suffix - Lubrication

Suffix - Other variants

Example 1

6205-RS1NRTN9/P63LT20CVB123

where

6205 =

Basic designation

‑RS1NR =

Suffix - External design (seals, snap ring groove etc.)

TN9 =

Suffix - Cage design

P63 =

Suffix - Accuracy, clearance, preload, quiet running

LT20C =

Suffix - Lubrication

VB123 =

Suffix - Other variants

Example 2

23064 CCK/HA3C084S2W33

where

23064 =

Basic designation

CC =

Suffix - Internal design

K =

Suffix - External design (seals, snap ring groove etc.)

HA3 =

Suffix - Materials, heat treatment

C084 =

Suffix - Accuracy, clearance, preload, quiet running

S2 =

Suffix - Stabilization

W33 =

Suffix - Lubrication

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